Waitopedia is a comprehensive resource of information about SQL Server waits.

The description shown below is the top answer as voted by the Spotlight community.

The charts are based on 2.1 TB of data collected from 4207 instances uploaded by 323 Spotlight users over an 8 week period.


Category: Other
SQL Server versions: 2005, 2008, 2008 R2, 2012, 2014, 2016, 2017


1 Answer


Occurs when a backup task is waiting for data, or is waiting for a buffer in which to store data. This type is not typical, except when a task is waiting for a tape mount. Information from Microsoft®

Very common

This wait is very common for most instances

For each of 4207 instances, we ranked BACKUPIO on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.

Prevalence of BACKUPIO across the Spotlight Population

For 77 % of hours with this wait, average wait time is less than 24 ms

For each instance, we found all the recent hours when it had a BACKUPIO wait. We found the average latency for each of those hours.

2835 instances contributed data to this chart

Latency Distribution of BACKUPIO across the Spotlight Population